2010 Cook County Board of Commissioners election
The 2010 Cook County Board of Commissioners election was held on November 2, 2010. It was preceded by a primary election held on February 5, 2010. It coincided with other 2010 Cook County, Illinois, elections. It saw all seventeen seats of the Cook County Board of Commissioners up for election to four-year terms.
The Democratic Party ran candidates in races for all seventeen seats, while the Republican Party contested eleven seats. The Green Party contested ten races. Democrats increased their majority, flipping a control of a previously-Republican seat. However, Democrats also saw a more than 9-point decline in their share of the cumulative popular vote: with Republicans and Greens each seeing a more than 4.5-point increase.
Background
The previous elections to the board had been held in 2006. The 2006 elections had been a wave election for Democrats nationally. The 2010 elections, by contrast, were a wave election for the Republicans nationally, with impacts of that wave seen in Illinois elections.1st district
Incumbent third-term Commissioner Earlean Collins, a Democrat, was reelected.Primaries
Republican
No candidates, ballot-certified or formal write-in, ran in the Republican primary.2nd district
Incumbent first-term commissioner Robert Steele, a Democrat, was reelected.Primaries
Republican
No candidates, ballot-certified or formal write-in, ran in the Republican primary.3rd district
Incumbent Commissioner Jerry Butler, a Democrat who first assumed the office in 1985, was reelected.Primaries
Republican
No candidates, ballot-certified or formal write-in, ran in the Republican primary.Green
No candidates, ballot-certified or formal write-in, ran in the Green primary. The Green Party ultimately nominated Marie J. "Jenny" Wohadlo.4th district
Incumbent first-term Commissioner William Beavers, a Democrat, was reelected.Primaries
Republican
No candidates, ballot-certified or formal write-in, ran in the Republican primary.5th district
Incumbent fourth-term Commissioner Deborah Sims, a Democrat, was reelected.Primaries
Green
No candidates, ballot-certified or formal write-in, ran in the Green primary.6th district
Incumbent second-term Commissioner Joan Patricia Murphy, a Democrat, was reelected.Primaries
Republican
Sandra Czyznikiewicz defeated former 6th district Commissioner William Moran and Michael Hawkins in the Republican primary.Green
No candidates, ballot-certified or formal write-in, ran in the Green primary.7th district
Incumbent fifth-term Commissioner Joseph Mario Moreno, a Democrat, lost reelection, being unseated in the Democratic primary by Jesús "Chuy" García, who went on to win the general election.Primaries
Republican
No candidates, ballot-certified or formal write-in, ran in the Republican primary.8th district
Incumbent Commissioner Edwin Reyes, a Democrat, who been appointed in 2009 after Roberto Maldonado resigned to serve a Chicago alderman, was elected to a full term.Primaries
Republican
No candidates, ballot-certified or formal write-in, ran in the Republican primary.Green
No candidates, ballot-certified or formal write-in, ran in the Green primary.9th district
Incumbent fourth-term Commissioner Peter N. Silvestri, a Republican, was reelected.10th district
Incumbent Commissioner Bridget Gainer, a Democrat first appointed in 2009, was elected to a full term.Primaries
Republican
No candidates, ballot-certified or formal write-in, ran in the Republican primary. The Republican Party ultimately nominated Wes Fowler.Green
No candidates, ballot-certified or formal write-in, ran in the Republican primary.11th district
Incumbent Commissioner John P. Daley, a Democrat in office since 1992, was reelected.Primaries
Green
No candidates, ballot-certified or formal write-in, ran in the Republican primary.12th district
Incumbent second-term Commissioner Forrest Claypool, a Democrat, did not seek reelection. John Fritchey was elected to succeed him.Primaries
Republican
No candidates, ballot-certified or formal write-in, ran in the Republican primary. The Republican Party ultimately nominated William C. "Bill" Miceli.Green
No candidates, ballot-certified or formal write-in, ran in the Green primary.13th district
Incumbent second-term Commissioner Larry Suffredin, a Democrat, was reelected.14th district
Incumbent third-term Commissioner Gregg Goslin, a Republican, was reelected.Primaries
Green
No candidates, ballot-certified or formal write-in, ran in the Green primary.15th district
Incumbent first-term Commissioner Tim Schneider, a Republican, was reelected.Primaries
Green
No candidates, ballot-certified or formal write-in, ran in the Green primary. The Green Party ultimately nominated Laura Ehorn.16th district
Incumbent second-term Commissioner Tony Peraica, a Republican, lost reelection to Democrat Jeff Tobolski.17th district
Incumbent second-term Commissioner Elizabeth Ann Doody Gorman, a Republican, was reelected.Summarizing statistics
| Party | Popular vote | Seats won |
| Democratic | 875,019 | 13 |
| Republican | 356,573 | 4 |
| Green | 68,644 | 0 |
| Total | 1,300,236 |
| Party | Returning members | Newly elected members |
| Democratic | 10 | 3 |
| Republican | 4 | 0 |